if i get your question, this depends on what area you are looking for.
restricted video drivers for "ATI" or "Nvidia" cards ("Linux Mint Cassandra" has "Envy .93")
audio and video codec that a among the best
VLC and Mplayer , flash, Java 6, and many others
also by using
alien
to create deb packages from
rpm, dpkg, stampede slp, and slackware tgz
based sources.
then gdebi to install the generated output of alien